US Bridges

SR1511 over Deep Run Swamp

Fair

Martin County, North Carolina · 0.5 Mi. S. Jct. US64 · Structure no. 000000001170044

Built
1956
69 years old, rebuilt 2024
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
60 ft
4 main spans
Daily traffic
650
2022 count
Owner
State
State Highway Agency

About this bridge

SR1511 over Deep Run Swamp is a steel stringer/multi-beam or girder carrying SR1511 over Deep Run Swamp in Martin County, North Carolina. It was built in 1956 and reconstructed in 2024, so it is 69 years old, older than the North Carolina average of 38.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 650 vehicles a day, roughly 6% of them trucks, projected to reach 1,300 by 2040. The structure is 60 ft (18.2 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSR1511
CrossesDeep Run Swamp
Location0.5 Mi. S. Jct. US64
RouteState Highway 1511
Coordinates35.80058, -76.9374
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46 US tons
Inventory rating28 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans4
Design loadUnknown
Structure length60 ft (18.2 m)
Longest span15 ft (4.5 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic650 (2022)
Projected traffic1,300 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR1511 over Deep Run Swamp built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 2024.

What condition is SR1511 over Deep Run Swamp in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2024.

How much traffic does SR1511 over Deep Run Swamp carry?

About 650 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is SR1511 over Deep Run Swamp?

The structure is 60 ft (18.2 m) long with a longest span of 15 ft (4.5 m) and a deck 24 ft wide.

Who owns SR1511 over Deep Run Swamp?

It is owned by the State Highway Agency.